Most patients recover completely, while others must ease symptoms and reduce the duration of illness by several treatments. Moreover, the initial phase of GBS is followed by a long recovery period where intensive neurorehabilitation is important. Some people will not recover completely from GBS and experience long-term complications such as not being able to walk unaided, loss of sensation causing lack of coordination and balance. It is estimated around 20% of people with GBS still experience some muscle weakness after three years. Some may also have persistent fatigue. In rare cases, complications can be life threatening, particularly in the acute phase.